For some applications (e.g. FTQ) you can see the jitter that is introduced bythe timer tick in the result data set. Therefore the task was to completelydisable the timer tick or at least reduce the impact on the application.

This patchset is reusing the infrastructure that disables the timer tick duringidle periods to disable it as well when SCHED_FIFO tasks are executed.

The results of the FTQ workload show that the timer tick is getting disabledlong periods but the impact of a single interruption seems to increase.Possible, this is due to the fact that the timer tick needs to be enabled againduring interrupts.

Other known issues:- Currently the time accounting is totally broken but that was not the primary focus.